package info.victor.parameterss;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.servlet.Servlet;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class SignIn
 */
@WebServlet("/SignIn")
public class SignIn extends HttpServlet implements Servlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public SignIn() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		PrintWriter output = response.getWriter();
		String login = request.getParameter("login");
		String dni = request.getParameter("dni");
		String email = request.getParameter("email");
		
		//We check values using REGEX
		Pattern patron = Pattern.compile("^[a-z]{8}$");
		Matcher loginChecker = patron.matcher(login);		
		if (loginChecker.find()){
			output.write("Login format correct<br />");
		} else {
			//output.write("Login format incorrect <br />");
			//#############3 REDIRECT TO LOGIN:
			this.getServletContext().getRequestDispatcher("/login.jsp").forward(request, response);
		}
		
		patron = Pattern.compile("^[a-z]{8}$");
		Matcher dniChecker = patron.matcher(dni);	
		if (dniChecker.find()){
			output.write("dni format correct<br />");
		} else {
			this.getServletContext().getRequestDispatcher("/login.jsp").forward(request, response);
		}
		
		patron = Pattern.compile("[0-9]");
		Matcher emailChecker = patron.matcher(email);	
		if (emailChecker.find()){
			output.write("email format correct<br />");
		} else {
			this.getServletContext().getRequestDispatcher("/login.jsp").forward(request, response);
		}
	}

}
